Sökning: "NATURVETENSKAP Fysik Kärnfysik"

Visar resultat 1 - 5 av 133 avhandlingar innehållade orden NATURVETENSKAP Fysik Kärnfysik.

  1. 1. Neutron Scattering at 96 MeV

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Angelica Öhrn; Uppsala universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; neutron; elastic scattering; inelastic scattering; differential cross section; optical model potential; Wick s limit; angular distribution; pre-equilibrium; Kärnfysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : Data on elastic scattering of 96 MeV neutrons from 56Fe, 89Y and 208Pb in the angular interval 10-70° are presented. The previously published data on 208Pb have been extended, as a new method has been developed to obtain additional information at the most forward angles. LÄS MER

  2. 2. Experimental Studies of the Synthesis and the Survival Probability of Transactinides

    Detta är en avhandling från Uppsala : Institutionen för strålningsvetenskap

    Författare :Chariklia Rouki; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; transactinides; synthesis of superheavy elements; hot fusion; element 112; survival probability; Γn Γf; Kärnfysik; NATURAL SCIENCES Physics Nuclear physics; NATURVETENSKAP Fysik Kärnfysik; kärnfysik; Nuclear Physics;

    Sammanfattning : In 1999 scientists in Dubna announced the successful synthesis of the nucleus 283112 by the reaction 48Ca+ 238U, with a cross-section of 5.0 pb. The isotope was found to decay by spontaneous fission (t1/2=81 s). LÄS MER

  3. 3. η Meson Production in Proton-Proton Collisions at Excess Energies of 40 and 72 MeV

    Detta är en avhandling från Uppsala : Institutionen för strålningsvetenskap

    Författare :Henrik Petrén; Tord Johansson; Pawel Moskal; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Physics Nuclear physics; NATURVETENSKAP Fysik Kärnfysik; NATURAL SCIENCES Physics Elementary particle physics; NATURVETENSKAP Fysik Elementarpartikelfysik; kärnfysik; Nuclear Physics;

    Sammanfattning : The production of η mesons in proton-proton collisions has been studied with the WASA detector using internal pellet targets in the CELSIUS storage ring at the The Svedberg Laboratory in Uppsala.Data were taken at two beam energies, 1360 MeV and 1445 MeV, corresponding to CM excess energies of 40 and 72 MeV, respectively. LÄS MER

  4. 4. Calculation and Measurement of the Neutron Emission Spectrum due to Thermonuclear and Higher-Order Reactions in Tokamak Plasmas

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Luigi Ballabio; Jef Ongena; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Kärnfysik; NATURAL SCIENCES Physics Nuclear physics; NATURVETENSKAP Fysik Kärnfysik; Applied Nuclear Physics; tillämpad kärnfysik;

    Sammanfattning : A series of analytic and numerical models have been developed for the prediction and interpretation of the energy spectrum of the neutron emission from thermonuclear deuteriumtritium (DT) plasmas. The main component of the neutron emission, due to reactions between thermal fuel ions, has been modeled as well as minority components due to the presence of fast (supra-thermal) ions. LÄS MER

  5. 5. Neutron induced light-ion production from iron and bismuth at 175 MeV

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Riccardo Bevilacqua; Stephan Pomp; Magnus Wolke; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; neutron induced reactions; light-ion production; quasi-monoenergetic neutron beam; nuclear data; accelerator driven systems; NATURAL SCIENCES Physics Nuclear physics; NATURVETENSKAP Fysik Kärnfysik; Nuclear Physics; kärnfysik; Applied Nuclear Physics; tillämpad kärnfysik;

    Sammanfattning : Light-ions (protons, deuterons, tritons, 3He and α articles) production in the interaction of 175 MeV neutrons with iron and bismuth has been measured using the Medley setup at the The Svedberg Laboratory (TSL) in Uppsala. These measurements have been conducted in the frame of an international collaboration whose aim is to provide the scientific community with new nuclear data of interest for the development of Accelerator Driven Systems, in the range of 20 to 200 MeV. LÄS MER